RLV431
69-2073EF-1 2008-01-29 3/4
Manual (hold) mode
To use the Manual mode, press the
Mode
button until
Man
is selected (outlined) on the screen. Set the
desired temperature using the
Up
or
Down
button.
In this mode, any modification to the temperature
setpoint must be done manually.
Economy mode
To use the Economy mode, press the
Mode
button
until
Econo
is selected (outlined) on the screen. This
mode is ideal for weekend residences as it can be
used as follows: The temperature is kept at an econ-
omy level during most of your absence and is raised to
a comfortable level by your usual arrival time. If you do
not show up, the temperature returns to the economy
level until next weekend.
The economy mode has two periods which should be set as follows:
The economy mode should be used as follows:
Place the thermostat in Economy mode during your absence.
When you arrive, place the thermostat in Automatic mode or in
Manual mode before the temperature drops back to the
economy level.
When you leave, switch the thermostat back to Economy mode.
To program the two periods of the economy mode:
n
Press the
Mode
button until
Econo
is selected.
o
Press the
Pgm
button. The first period (1) is displayed.
p
Set the start day for the displayed period using the
Day
button.
q
Set the start time using the
Hour
and
Min
buttons.
r
Set the temperature for the period using the
Up
or
Down
button.
s
Press the
Pgm
button to select the next program (2).
t
Repeat steps 2 to 4 to set the day, time and temperature.
u
Press the
Ret
button to return the thermostat to normal opera-
tion.
WARNING: When the thermostat is reset, all parameters (clock, con-
figuration and schedules) return to their default settings.
n
Lift the thermostat’s cover.
o
Press and hold the
Pgm
button.
p
Insert a pointed object (e.g., paperclip) in the reset opening.
Remove it when the thermostat’s screen becomes blank.
q
Wait one second and release the
Pgm
button.
During a power outage, the thermostat display remains lit for approx-
imately the next 15 minutes during which the
LP (
low power) indica-
tor appears. The settings are stored in memory. However, if the
power failure exceeds 5 hours, only the thermostat’s clock must be
re-adjusted. When power returns, the thermostat returns to the mode
of operation preceding the power outage.
Period Temperature Setting
Start Time Setting
1
Set to a comfortable
level.
Set the day and time that you
want the temperature to start
rising so that a comfortable level
is attained by the time you arrive.
2
Set to an economy
level.
Set the day and time that you
want the temperature to start
dropping to an economy level if
you do not show up.
t
Thermostat Reset
7.
u
Power Outage
8.
v
Troubleshooting
9.
PROBLEM
SOLUTIONS
Thermostat’s housing is
hot.
This is normal. When the thermostat is
running at full capacity, its housing can
reach 40 °C (104 °F).
Wrong temperature is
displayed.
Correct if any the following conditions
applies:
•
The thermostat is exposed to an
air draft.
•
The sticker on the thermostat’s
screen has not been removed.
•
The thermostat is located near or
above a heat source such as a
light dimmer.
Wrong time is dis-
played.
The thermostat was without power for
more than 5 hours.
Temperature does not
change according to the
programmed schedule.
•
Ensure the thermostat is in Auto-
matic mode.
•
Check the clock and the schedule.
If the thermostat is configured for
12-hour format, ensure that
PM
appears on the screen when after-
noon times are displayed.
LP
reappears on the
screen and disappears
after a few minutes.
The thermal protection device on the
heater has temporarily opened. This
can happen if the heater is obstructed
by furniture or curtain and has over-
heated, or if the heater’s thermal pro-
tection device is too sensitive.
Display looks faded
when heating is acti-
vated.
The load of the heating system is prob-
ably less than the required minimum.
This thermostat cannot be used for
loads below that rating.
400-102-002-B_69-2073EF-1 (Honeywell RLV431) ENG.fm Page 3 Tuesday, January 29, 2008 10:12 AM